MagicBubble was a was a proposed 802.11 standard developed at Deskin Reasearch Group. http://wanderbook.com http://eddieclay.com

1. MagicBubble ™ ©1999-2000, All Rights Reserved MagicBubble, Inc. Proprietary Turn Sound On Go to next slide to begin automatic presentation

2. In the year 2001, there will be an alternative to a complex, and out-of-control world. MagicBubble Video

3. MagicBubble ™ Introduction ©2000, All Rights Reserved MagicBubble, Inc. Proprietary

9. MagicBubble ™ The Technical Advantage ©2000, All Rights Reserved MagicBubble, Inc. Proprietary

11. MagicBubble Coverage Walls don’t increase path loss No reflections, no “Swiss cheese” coverage People don’t block path

14. Technical Overview (subset)‏ click to next page ©2000, All Rights Reserved MagicBubble, Inc. Proprietary

20. Architecture Frequency Plans Modulation and Coding Access Protocols

22. MagicBubble Architecture Hardware Bubble Hub & external interface connections; Bubble-compliant devices Coverag e Interior of physical structure typically up to ~ 100 kft 2 (~ 10 km 2 )‏ Accessibility Any compliant device inside the Bubble (multiple Bubble volumes must be connected through standard data interfaces) Phone DSL Cable Satellite

23. Overview - Network Structure External Interfaces Access Point (Hub + Exciter)‏ Bubble Volume Phone DSL Cable Satellite HVAC ducts Electrical wiring Plumbing & sprinkler systems Modulated RF carrier is coupled by Bubble exciter to a convenient element of the building’s structure...

24. Overview - Network Structure (continued)‏ … each piece of which re-couples energy to other nearby elements, setting up a complex near-field electromagnetic standing wave whose relatively long wavelengths cannot propagate well through the relatively small apertures of the structure. Phone DSL Cable Satellite

25. Overview - Network Structure (continued)‏ Any device in the volume capable of receiving (demodulating and decoding) the signal coupled into the infrastructure by the exciter can communicate with any system connected to the hub. Phone DSL Cable Satellite

27. Top-Level Frequency Plan Frequency Plan (not to scale)‏ Non-restricted bands in FCC unlicensed 0.5 to 54–MHz frequency range 0.505 10 1 20 30 40 54 2 5 RF (MHz)  FCC Part 15 Restricted Bands

28. Application & Characteristics  LOWER HIGHER  No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage Transmit efficiency Frequency and Bandwidth

29. Application & Characteristics (continued)‏ Longer wavelengths, more near-field characteristics; lower data capacity and access requirements, simpler modulations acceptable / advisable; Shorter wavelengths; more prone to radiation and leakage; higher data capacity and access requirements; higher bandwidth efficiency required No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage 0.5 MHz 54 MHz Transmit efficiency 5 MHz

30. Application & Characteristics (continued)‏ No. of Devices Usage / duty cycle BW / data rate Power consumption Cavity leakage Transmit efficiency Longer wavelengths, more near-field characteristics; lower data capacity and access requirements, simpler modulations acceptable / advisable ; Shorter wavelengths; more prone to radiation and leakage; higher data capacity and access requirements; higher bandwidth efficiency required Rigid channel allocation Low data rates Hybrid FDMA/TDMA B/QPSK Contention Channels Higher data rates CDMA / CSMA QAM / CCK 0.5 to 5 MHz 5 to 54 MHz

33. Summary Fewer devices Broadband High duty cycles TRADE SPACE Large numbers Low rates Low duty cycles Broadband Plan Base Plan Applications Frequency Plans Characteristics Long wavelengths Tight structures Short wavelengths Open structures Separate Low / High Sub-ranges 4 Mbps / 24 Mbps Capacity QPSK / OQPSK FDMA / TDMA Separate Low / High Sub-ranges 4 Mbps / 90+ Mbps Capacity 64/256-QAM, CCK DOCSIS MAC

34. MagicBubble Architecture (continued)‏ Access Protocol Different requirements for different applications; desirable to have few protocols as practical to constrain product development costs data rate  number of devices  duty cycle/usage  Dedicated FDMA and rigidly controlled TDMA Hybrid FDMA/TDMA CDMA; WAP CDMA; CSMA/CD; WAP / SWAP candidate protocols narrowband broadband

38. Functional Block Diagram … host power availability assumed … wideband, direct conversion software radio … single antenna, three chipsets (RF, processor, DSP modem), tbd interfaces … processor/memory could be integrated with DSP modem BPF ADC DEMOD MAC TV I/F (USB)‏ BURST MOD CPU Bubble RF DAC Memory AC/DC Converter BPF 64-QAM / 256-QAM 27 – 56 Mbps I/F DPLXR QPSK / 16-QAM ~ 3 Mbps

39. Cost Estimate Antenna Package / assembly AC/DC converter ass’y RF/tuner ass’y /chip DSP modem Interface ass’y / chip Low High 10 6 Estimate Range Production Quantity TOTAL per unit ($, wholesale)‏ 0.50 0.75 0.52 0.78 18.00 1.76 2.65 0.58 0.87 16.19 24.29 1.24 0.83 12.00 Qty. Cost Estimate - Mb DOCSIS CATV Embedded 1 10 100 1 10 10 2 Wholesale Cost (dollars)‏ 5 10 3 10 4 10 5 10 6 10 7 50 20 2